Quick start manual

STER PMU Quick Start Manual Working with the instrument
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4.4.2 CONNECTING CURRENT TERMINALS
IN I3 C B A I1
L1
L3C
N
A
I2
L2 B
IN,I3,I2,I1
Connect the four current clamp connectors to the top 4
current terminals.
Always connect the cables to the device before
mounting the clamps.
In case of usage of non-clamp-on sensors like
A1037, connection to secondary CT circuits must be
performed with extreme care.
Figure 4.9: Current terminals
4.5 WIRING CONFIGURATIONS
4.5.1 CONNECTING TO LOW-VOLTAGE POWER SYSTEMS
4-WIRE (4W) 3-PHASE SYSTEM
To configure the instrument for 4-wire (4W) LV measurements, start by entering the MEASUREMENT SETUP menu
as described before (see Fig. 4.1). Using the up ( ) and down ( ) keys select the Measurement type menu
item, and make sure that 4W setting is selected using left ( ) and right ( ) keys:
Figure 4.10: Communication setup screen for 4-wire measurements
To exit the menu and apply settings, press the to exit the menu, and then confirm the action with .
Connecting the instrument to the grid should be done according to the following figure: